Exhibit 4.21

Exclusive Option Agreement

This Exclusive Option Agreement (this Agreement) is executed by and among the following Parties as of April 20, 2015 in Beijing,
the Peoples Republic of China (China or the PRC):



|         |  |                                                                                                                                                                                                                                                        
|-------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd., a wholly foreign owned enterprise, organized and existing under the laws of the PRC, with its address at Room C2-215, Building 4, No. 218, Yesheng Road, China (Shanghai) Pilot Free Trade
Zone;              
|         | 
|Party B: |  | Bin LI, a Chinese citizen with Identification No.:         ; and                                                                                                                                                                                       
|         | 
|Party C: |  | Beijing Yixin Information Technology Co., Ltd., a limited liability company organized and existing under the laws of the PRC, with its address at Room 754 and 755, Floor 7, Building 3, No.6, Capital Gymnasium South Road,
Haidian District, Beijing.

In this Agreement, each of Party A, Party B and Party C shall be referred to as a Party
respectively, and they shall be collectively referred to as the Parties.

Whereas:

Party B is a shareholder of Party C and as of the date hereof holds 55.7% of equity interests of Party C, representing RMB 27,850,000 in the
registered capital of Party C.

Now therefore, upon mutual discussion and negotiation, the Parties have reached the following agreement:

1.

Sale and Purchase of
Equity Interest

1.1

Option Granted

In
consideration of the payment of RMB10 by Party A, the receipt and adequacy of which is hereby acknowledged by Party B, Party B hereby irrevocably grants Party A an irrevocable and exclusive right to purchase, or designate one or more persons (each,
a Designee) to purchase the equity interests in Party C then held by Party B once or at multiple times at any time in part or in whole at Party As sole and absolute discretion to the extent permitted by Chinese laws and at the
price described in Section 1.3 herein (such right being the Equity Interest Purchase Option). Except for Party A and the Designee(s), no other person shall be entitled to the Equity Interest Purchase Option or other rights with
respect to the equity interests of Party B. Party C hereby agrees to the grant by Party B of the Equity Interest Purchase Option to Party A. The term person as used herein shall refer to individuals, corporations, partnerships,
partners, enterprises, trusts or non-corporate organizations.



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1.2

Steps for Exercise of Equity Interest Purchase Option

Subject to the provisions of the laws and regulations of China, Party A may exercise the Equity Interest Purchase Option by issuing a written
notice to Party B (the Equity Interest Purchase Option Notice), specifying: (a) Party As or the Designees decision to exercise the Equity Interest Purchase Option; (b) the portion of equity interests to be purchased by Party
A or the Designee from Party B (the Optioned Interests); and (c) the date for purchasing the Optioned Interests or the date for transfer of the Optioned Interests.

1.3

Equity Interest Purchase
Price

The purchase price of the Optioned Interests shall be RMB 27,850,000. If appraisal is required by the laws of China at
the time when Party A exercises the Equity Interest Purchase Option, the Parties shall negotiate in good faith and based on the appraisal result make necessary adjustment to the Equity Interest Purchase Price so that it complies with any and all
then applicable laws of China (collectively, the Equity Interest Purchase Price).Party B shall donate the balance of the Equity Interest Purchase Price received from Party A, after deducting/ withholding the relevant taxes (if any)
pursuant to applicable laws of China, to Party A or the Designee(s) of Party A for free within ten(10) days after Party B receives the Equity Interest Purchase Price and pays/ withholds the relevant taxes (if any).

1.4

Transfer of Optioned
Interests

For each exercise of the Equity Interest Purchase Option:

1.4.1

Party B shall cause Party
C to promptly convene a shareholders meeting, at which a resolution shall be adopted approving Party Bs transfer of the Optioned Interests to Party A and/or the Designee(s);

1.4.2

Party B shall obtain
written statements from the other shareholders of Party C giving consent to the transfer of the equity interest to Party A and/or the Designee(s) and waiving any right of first refusal related thereto;



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1.4.3

Within thirty (30) days after receipt of the Equity Interest Purchase Option Notice by Party B from Party A and/or any Designee (whichever is
applicable), Party B and Party A and/or such Designee (whichever is applicable) shall complete all procedures for Party As and/or such Designees (whichever is applicable) acquisition of such Optioned Interests and for Party A and/or such
Designee (whichever is applicable) becoming a shareholder of Party C, including without limitation execution of an equity interest transfer contract and any other necessary documents or agreements, adoption of any necessary resolutions, issuance of
any necessary documents by Party C and performance of all relevant procedures;

1.4.4

The relevant Parties shall execute all other necessary contracts, agreements or documents, obtain all necessary government licenses and
permits and take all necessary actions to transfer valid ownership of the Optioned Interests to Party A and/or the Designee(s), unencumbered by any security interests, and cause Party A and/or the Designee(s) to become the registered owner(s) of the
Optioned Interests. For the purpose of this Section and this Agreement, security interests shall include securities, mortgages, third partys rights or interests, any stock options, acquisition right, right of first refusal,
right to offset, ownership retention or other security arrangements, but shall be deemed to exclude any security interest created by this Agreement, Party Bs Equity Interest Pledge Agreement and Party Bs Power of
Attorney. Party Bs Equity Interest Pledge Agreement as used in this Agreement shall refer to the Interest Pledge Agreement executed by and among Party A, Party B and Party C on the date hereof and any modification, amendment
and restatement thereto. Party Bs Power of Attorney as used in this Agreement shall refer to the Power of Attorney executed by Party B on the date hereof granting Party A with power of attorney and any modification, amendment and
restatement thereto.

2.

Covenants

2.1

Covenants regarding Party C

Party B (as a shareholder of Party C) and Party C hereby covenant as follows:

2.1.1

Without the prior written
consent of Party A, they shall not in any manner supplement, change or amend the articles of association of Party C, increase or decrease its registered capital, or change its structure of registered capital in other manners;



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2.1.2

They shall maintain Party Cs corporate existence in accordance with good financial and business standards and practices, obtain and
maintain all necessary government licenses and permits by prudently and effectively operating its business and handling its affairs;

2.1.3

Without the prior written consent of Party A, they shall not at any time following the date hereof, sell, transfer, mortgage or dispose
of in any manner any material assets of Party C or legal or beneficial interest in the material business or revenues of Party C of more than RMB 200,000, or allow the encumbrance thereon of any security interest;

2.1.4

Without the prior written
consent of Party A, they shall not incur, inherit, guarantee or suffer the existence of any debt, except for payables incurred in the ordinary course of business other than through loans;

2.1.5

They shall always operate
all of Party Cs businesses in the ordinary course of business to maintain the asset value of Party C and refrain from any action/omission that may affect Party Cs operating status and asset value;

2.1.6

Without the prior written
consent of Party A, they shall not cause Party C to execute any major contract, except the contracts in the ordinary course of business (for purpose of this subsection, a contract with a price exceeding RMB50,000 shall be deemed a major contract);

2.1.7

Without the prior
written consent of Party A, they shall not cause Party C to provide any person with any loan or credit;

2.1.8

They shall provide Party A with information on Party Cs business operations and financial condition at Party As request;

2.1.9

If requested by Party A,
they shall procure and maintain insurance in respect of Party Cs assets and business from an insurance carrier acceptable to Party A, at an amount and type of coverage typical for companies that operate similar businesses;



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2.1.10

Without the prior written consent of Party A, they shall not cause or permit Party C to merge, consolidate with, acquire or invest in any
person;

2.1.11

They shall
immediately notify Party A of the occurrence or possible occurrence of any litigation, arbitration or administrative proceedings relating to Party Cs assets, business or revenue;

2.1.12

To maintain the
ownership by Party C of all of its assets, they shall execute all necessary or appropriate documents, take all necessary or appropriate actions, file all necessary or appropriate complaints, and raise necessary or appropriate defenses against all
claims;

2.1.13

Without the
prior written consent of Party A, they shall ensure that Party C shall not in any manner distribute dividends to its shareholders, provided that upon Party As written request, Party C shall immediately distribute all distributable profits to
its shareholders;

2.1.14

At the request of Party A, they shall appoint any person designated by Party A as the director or executive director of Party C;

2.1.15

Without Party As
prior written consent, Party C they shall not engage in any business in competition with Party A or its affiliates; and

2.1.16

Unless otherwise required by PRC law, Party C shall not be dissolved or liquidate without prior written consent by Party A.

2.2

Covenants of Party B

Party B hereby covenants as follows:

2.2.1

Without the prior written
consent of Party A, Party B shall not sell, transfer, mortgage or dispose of in any other manner any legal or beneficial interest in the equity interests in Party C held by Party B, or allow the encumbrance thereon, except for the interest placed in
accordance with Equity Interest Pledge Agreement entered into by and among the Party A and Party B onApril20, 2015(the Equity InterestPledgeAgreement) and Power of Attorney
provided by Party B to Party A on April 20, 2015 (the Power of Attorney);



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2.2.2

Without the prior written consent of Party A, Party B shall cause the shareholders meeting and/or the directors (or the executive
director) of Party C not to approve any sale, transfer, mortgage or disposition in any other manner of any legal or beneficial interest in the equity interests in Party C held by Party B, or allow the encumbrance thereon of any security interest,
except for the interest placed in accordance with Equity Interest Pledge Agreement and Power of Attorney;

2.2.3

Without the prior written consent of Party A, Party B shall cause the shareholders meeting or the directors (or the executive director)
of Party C not to approve the merger or consolidation with any person, or the acquisition of or investment in any person;

2.2.4

Party B shall immediately notify Party A of the occurrence or possible occurrence of any litigation, arbitration or administrative proceedings
relating to the equity interests in Party C held by Party B;

2.2.5

Party B shall cause the shareholders meeting or the directors (or the executive director) of Party C to vote their approval of the
transfer of the Optioned Interests as set forth in this Agreement and to take any and all other actions that may be requested by Party A;

2.2.6

To the extent necessary
to maintain Party Bs ownership in Party C, Party B shall execute all necessary or appropriate documents, take all necessary or appropriate actions, file all necessary or appropriate complaints, and raise necessary or appropriate defenses
against all claims;

2.2.7

Party B shall appoint any designee of Party A as the director or the executive director of Party C, at the request of Party A;

2.2.8

Party B hereby waives its
right of first of refusal to transfer of equity interest by any other shareholder of Party C to Party A (if any), and gives consent to execution by each other shareholder of Party C with Party A and Party C the exclusive option agreement, the equity
interest pledge agreement and the power of attorney similar to this Agreement, Party Bs Equity Interest Pledge Agreement and Party Bs Power of Attorney and undertakes not to take any action in conflict with such documents executed by the
other shareholders;



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2.2.9

Party B shall promptly donate any profit, interest, dividend or proceeds of liquidation to Party A or any other person designated by Party A
to the extent permitted under applicable PRC laws; and

2.2.10

Party B shall strictly abide by the provisions of this Agreement and other contracts jointly or separately executed by and among Party B,
Party C and Party A, perform the obligations hereunder and thereunder, and refrain from any action/omission that may affect the effectiveness and enforceability thereof. To the extent that Party B has any remaining rights with respect to the equity
interests subject to this Agreement hereunder or under the Party Bs Equity Interest Pledge Agreement or under the Party Bs Power of Attorney, Party B shall not exercise such rights except in accordance with the written instructions of
Party A.

3.

Representations
and Warranties

Party B and Party C hereby represent and warrant to Party A, jointly and severally, as of the date of this
Agreement and each date of transfer of the Optioned Interests, that:

3.1

They have the power, capacity and authority to execute and deliver this Agreement and any equity interest transfer contracts to which they are
parties concerning the Optioned Interests to be transferred thereunder (each, a Transfer Contract), and to perform their obligations under this Agreement and any Transfer Contracts. Party B and Party C agree to enter into Transfer
Contracts consistent with the terms of this Agreement upon Party As exercise of the Equity Interest Purchase Option. This Agreement and the Transfer Contracts to which they are parties constitute or will constitute their legal, valid and
binding obligations and shall be enforceable against them in accordance with the provisions thereof;

3.2

Party B and Party C have obtained any and all approvals and consents from government authorities and third parties (if required) for execution,
delivery and performance of this Agreement.

3.3

The execution and delivery of this Agreement or any Transfer Contracts and the obligations under this Agreement or any Transfer Contracts shall
not: (i) cause any violation of any applicable laws of China; (ii) be inconsistent with the articles of association, bylaws or other organizational documents of Party C; (iii) cause the violation of any contracts or instruments to which they are a
party or which are binding on them, or constitute any breach under any contracts or instruments to which they are a party or which are binding on them; (iv) cause any violation of any condition for the grant and/or continued effectiveness of any
licenses or permits issued to either of them; or (v) cause the suspension or revocation of or imposition of additional conditions to any licenses or permits issued to either of them;



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3.4

Party B has a good and merchantable title to the equity interests held by Party B in Party C. Except for Equity Interest Pledge Agreement
and Power of Attorney, Party B has not placed any security interest on such equity interests;

3.5

Party C is a limited liability company duly organized and validly existing under the laws of the PRC. Party C has a good and merchantable title
to all of its assets, and has not placed any security interest on the aforementioned assets;

3.6

Party C does not have any outstanding debts, except for (i) debt incurred in the ordinary course of business; and (ii) debts disclosed to Party
A for which Party As written consent has been obtained.

3.7

Party C has complied with all laws and regulations of China applicable to asset acquisitions; and

3.8

There are no pending or
threatened litigation, arbitration or administrative proceedings relating to the equity interests in Party C, assets of Party C or Party C.

4.

Effective Date and Term

This Agreement shall become effective upon execution by the Parties, and remain effective until all equity interests held by Party B in Party C
have been transferred or assigned to Party A and/or any other person designated by Party A in accordance with this Agreement.

5.

Governing Law and Resolution of Disputes

5.1

Governing law

The execution, effectiveness, construction, performance, amendment and termination of this Agreement and the resolution of disputes hereunder
shall be governed by the laws of PRC.



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5.2

Methods of Resolution of Disputes

In the event of any dispute with respect to the construction and performance of this Agreement, the Parties shall first resolve the dispute
through friendly negotiations. In the event the Parties fail to reach an agreement on the dispute within 30 days after either Partys request to the other Parties for resolution of the dispute through negotiations, either Party may submit
the relevant dispute to the China International Economic and Trade Arbitration Commission for arbitration, in accordance with its arbitration rules. The arbitration shall be conducted in Beijing. The arbitration award shall be final and
binding on all Parties.

6.

Taxes and Fees

Unless as otherwise agreed in this Agreement, each Party shall pay any and all transfer and registration tax, expenses and fees incurred
thereby or levied thereon in accordance with the laws of China in connection with the preparation and execution of this Agreement and the Transfer Contracts, as well as the consummation of the transactions contemplated under this Agreement and the
Transfer Contracts.

7.

Notices

7.1

All notices and other communications required or permitted to be given pursuant to this Agreement shall be delivered personally or sent by
registered mail, postage prepaid, by a commercial courier service or by facsimile transmission to the address of such Party set forth below. A confirmation copy of each notice shall also be sent by email. The dates on which notices shall
be deemed to have been effectively given shall be determined as follows:

7.1.1

Notices given by personal delivery, by courier service or by registered mail, postage prepaid, shall be deemed effectively given on the date
of receipt or refusal at the address specified for notices;

7.1.2

Notices given by facsimile transmission shall be deemed effectively given on the date of successful transmission (as evidenced by an
automatically generated confirmation of transmission).



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7.2

For the purpose of notices, the addresses of the Parties are as follows:



|         |  |                                                                                                           
|-------- |  | ----------------------------------------------------------------------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd.                                                                   
|Address: |  | Room 651, Floor 6, New Century Hotel Office, No.6, Capital Gymnasium South Road, Haidian District, Beijing
|Attn:    |  | Bin Li                                                                                                    
|Phone:   |  | +8610 6849 2345                                                                                           
|         | 
|Party B: |  | Bin LI                                                                                                    
|Address: |  | Room 651, Floor 6, New Century Hotel Office, No.6, Capital Gymnasium South Road, Haidian District, Beijing
|Phone:   |  | +86 139 0118 3488                                                                                         
|         | 
|Party C: |  | Beijing Yixin Information Technology Co., Ltd.                                                            
|Address: |  | Room 651, Floor 6, New Century Hotel Office, No.6, Capital Gymnasium South Road, Haidian District, Beijing
|Attn:    |  | Bin Li                                                                                                    
|Phone:   |  | +8610 6849 2345                                                                                           

7.3

Any Party may at any time change its address for notices by a notice delivered to the other Parties in accordance with the terms hereof.

8.

Confidentiality

The Parties acknowledge that the existence and the terms of this Agreement, and any oral or written information exchanged between the Parties
in connection with the preparation and performance this Agreement are regarded as confidential information. Each Party shall maintain confidentiality of all such confidential information, and without obtaining the written consent of other
Parties, it shall not disclose any relevant confidential information to any third parties, except for the information that: (a) is or will be in the public domain (other than through the receiving Partys unauthorized disclosure); (b) is under
the obligation to be disclosed pursuant to the applicable laws or regulations, rules of any stock exchange, or orders of the court or other government authorities; or (c) is required to be disclosed by any Party to its shareholders, directors,
employees, legal counsels or financial advisors regarding the transaction contemplated hereunder, provided that such shareholders, directors, employees, legal counsels or financial advisors shall be bound by the confidentiality obligations similar
to those set forth in this Section. Disclosure of any confidential information by the shareholders, director, employees of or agencies engaged by any Party shall be deemed disclosure of such confidential information by such Party and such Party
shall be held liable for breach of this Agreement.



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9.

Further Warranties

The Parties agree to promptly execute documents that are reasonably required for or are conducive to the implementation of the provisions and
purposes of this Agreement and take further actions that are reasonably required for or are conducive to the implementation of the provisions and purposes of this Agreement.

10.

Breach of Agreement

10.1

If Party B or
Party C conducts any material breach of any term of this Agreement, Party A shall have right to terminate this Agreement and/or require the Party B or Party C to compensate all damages; this Section 10 shall not prejudice any other rights of Party A
herein;

10.2

Party B or
Party C shall not have any right to terminate this Agreement in any event unless otherwise required by applicable laws.

11.

Miscellaneous

11.1

Amendment, change and supplement

Any amendment, change and supplement to this Agreement shall require the execution of a written agreement by all of the Parties.

11.2

Entire agreement

Except for the amendments, supplements or changes in writing executed after the execution of this Agreement, this Agreement shall
constitute the entire agreement reached by and among the Parties hereto with respect to the subject matter hereof, and shall supercede all prior oral and written consultations, representations and contracts reached with respect to the subject matter
of this Agreement.



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11.3

Headings

The headings of
this Agreement are for convenience only, and shall not be used to interpret, explain or otherwise affect the meanings of the provisions of this Agreement.

11.4

Language

This Agreement is written in both Chinese and English language in three copies, each Party having one copy. In case there is any conflict
between the Chinese version and the English version, the Chinese version shall prevail.

11.5

Severability

In the event
that one or several of the provisions of this Agreement are found to be invalid, illegal or unenforceable in any aspect in accordance with any laws or regulations, the validity, legality or enforceability of the remaining provisions of this
Agreement shall not be affected or compromised in any respect. The Parties shall strive in good faith to replace such invalid, illegal or unenforceable provisions with effective provisions that accomplish to the greatest extent permitted by law
and the intentions of the Parties, and the economic effect of such effective provisions shall be as close as possible to the economic effect of those invalid, illegal or unenforceable provisions.

11.6

Successors

This Agreement shall be binding on and shall inure to the interest of the respective successors of the Parties and the permitted assigns of
such Parties.

11.7

Survival

11.7.1

Any obligations that occur or that are due as a result of this Agreement upon the expiration or early termination of this Agreement shall
survive the expiration or early termination thereof.

11.7.2

The provisions of Sections 5, 8, 10 and this Section 11.7 shall survive the termination of this Agreement.



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11.8

Waivers

Any Party may
waive the terms and conditions of this Agreement, provided that such a waiver must be provided in writing and shall require the signatures of the Parties. No waiver by any Party in certain circumstances with respect to a breach by other Parties
shall operate as a waiver by such a Party with respect to any similar breach in other circumstances.



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IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                               
|-------- |  | ----------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd. (seal)
|         | 
|By:      |  | /s/ Bin Li                                    
|Name:    |  | Bin Li                                        
|Title:   |  | Legal Representative                          



Signature Page to
Exclusive Option Agreement



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IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |           
|-------- |  | ----------
|Party B: |  | Bin LI    
|         | 
|By:      |  | /s/ Bin Li



Signature Page to
Exclusive Option Agreement



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IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                                      
|-------- |  | -----------------------------------------------------
|Party C: |  | Beijing Yixin Information Technology Co., Ltd. (Seal)
|         | 
|By:      |  | /s/ Bin Li                                           
|Name:    |  | Bin LI                                               
|Title:   |  | Legal Representative                                 



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Exclusive Option Agreement



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Exclusive Option Agreement

This Exclusive Option Agreement (this Agreement) is executed by and among the following Parties as of April 20, 2015 in
Beijing, the Peoples Republic of China (China or the PRC):



|         |  |                                                                                                                                                                                                                                                                 
|-------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd., a wholly foreign owned enterprise, organized and existing under the laws of the PRC, with its address at Room C2-215, Building 4, No. 218, Yesheng Road, China (Shanghai) Pilot Free
Trade Zone;                       
|         | 
|Party B: |  | Beijing Jiasheng Investment Management Co., Ltd., a limited liability company organized and existing under the laws of the PRC, with its address at Floor 20, Block A, Building 1, No.19 Ronghua Mid Road, Economic Technological
Development Area, Beijing; and
|         | 
|Party C: |  | Beijing Yixin Information Technology Co., Ltd., a limited liability company organized and existing under the laws of the PRC, with its address at Room 754 and 755, Floor 7, Building 3, No.6, Capital Gymnasium South Road,
Haidian District, Beijing.         

In this Agreement, each of Party A, Party B and Party C shall be referred to as a Party
respectively, and they shall be collectively referred to as the Parties.

Whereas:

Party B is a shareholder of Party C and as of the date hereof holds 17.7% of equity interests of Party C, representing RMB 8,850,000 in the
registered capital of Party C.

Now therefore, upon mutual discussion and negotiation, the Parties have reached the following agreement:

1.

Sale and Purchase of
Equity Interest

1.1

Option Granted

In
consideration of the payment of RMB10 by Party A, the receipt and adequacy of which is hereby acknowledged by Party B, Party B hereby irrevocably grants Party A an irrevocable and exclusive right to purchase, or designate one or more persons
(each, a Designee) to purchase the equity interests in Party C then held by Party B once or at multiple times at any time in part or in whole at Party As sole and absolute discretion to the extent permitted by Chinese laws and at
the price described in Section 1.3 herein (such right being the Equity Interest Purchase Option). Except for Party A and the Designee(s), no other person shall be entitled to the Equity Interest Purchase Option or other rights with
respect to the equity interests of Party B. Party C hereby agrees to the grant by Party B of the Equity Interest Purchase Option to Party A. The term person as used herein shall refer to individuals, corporations, partnerships,
partners, enterprises, trusts or non-corporate organizations.



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1.2

Steps for Exercise of Equity Interest Purchase Option

Subject to the provisions of the laws and regulations of China, Party A may exercise the Equity Interest Purchase Option by issuing a written
notice to Party B (the Equity Interest Purchase Option Notice), specifying: (a) Party As or the Designees decision to exercise the Equity Interest Purchase Option; (b) the portion of equity interests to be purchased by Party
A or the Designee from Party B (the Optioned Interests); and (c) the date for purchasing the Optioned Interests or the date for transfer of the Optioned Interests.

1.3

Equity Interest Purchase
Price

The purchase price of the Optioned Interests shall be RMB 8,850,000. If appraisal is required by the laws of China at
the time when Party A exercises the Equity Interest Purchase Option, the Parties shall negotiate in good faith and based on the appraisal result make necessary adjustment to the Equity Interest Purchase Price so that it complies with any and all
then applicable laws of China (collectively, the Equity Interest Purchase Price).Party B shall donate the balance of the Equity Interest Purchase Price received from Party A, after deducting/ withholding the relevant taxes (if any)
pursuant to applicable laws of China, to Party A or the Designee(s) of Party A for free within ten(10) days after Party B receives the Equity Interest Purchase Price and pays/ withholds the relevant taxes (if any).

1.4

Transfer of Optioned
Interests

For each exercise of the Equity Interest Purchase Option:

1.4.1

Party B shall cause Party
C to promptly convene a shareholders meeting, at which a resolution shall be adopted approving Party Bs transfer of the Optioned Interests to Party A and/or the Designee(s);

1.4.2

Party B shall obtain
written statements from the other shareholders of Party C giving consent to the transfer of the equity interest to Party A and/or the Designee(s) and waiving any right of first refusal related thereto;



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1.4.3

Within thirty (30) days after receipt of the Equity Interest Purchase Option Notice by Party B from Party A and/or any Designee (whichever is
applicable), Party B and Party A and/or such Designee (whichever is applicable) shall complete all procedures for Party As and/or such Designees (whichever is applicable) acquisition of such Optioned Interests and for Party A and/or such
Designee (whichever is applicable) becoming a shareholder of Party C, including without limitation execution of an equity interest transfer contract and any other necessary documents or agreements, adoption of any necessary resolutions, issuance of
any necessary documents by Party C and performance of all relevant procedures;

1.4.4

The relevant Parties shall execute all other necessary contracts, agreements or documents, obtain all necessary government licenses and
permits and take all necessary actions to transfer valid ownership of the Optioned Interests to Party A and/or the Designee(s), unencumbered by any security interests, and cause Party A and/or the Designee(s) to become the registered owner(s) of the
Optioned Interests. For the purpose of this Section and this Agreement, security interests shall include securities, mortgages, third partys rights or interests, any stock options, acquisition right, right of first refusal,
right to offset, ownership retention or other security arrangements, but shall be deemed to exclude any security interest created by this Agreement, Party Bs Equity Interest Pledge Agreement and Party Bs Power of
Attorney. Party Bs Equity Interest Pledge Agreement as used in this Agreement shall refer to the Interest Pledge Agreement executed by and among Party A, Party B and Party C on the date hereof and any modification, amendment
and restatement thereto. Party Bs Power of Attorney as used in this Agreement shall refer to the Power of Attorney executed by Party B on the date hereof granting Party A with power of attorney and any modification, amendment and
restatement thereto.

2.

Covenants

2.1

Covenants regarding Party C

Party B (as a shareholder of Party C) and Party C hereby covenant as follows:

2.1.1

Without the prior written
consent of Party A, they shall not in any manner supplement, change or amend the articles of association of Party C, increase or decrease its registered capital, or change its structure of registered capital in other manners;



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2.1.2

They shall maintain Party Cs corporate existence in accordance with good financial and business standards and practices, obtain and
maintain all necessary government licenses and permits by prudently and effectively operating its business and handling its affairs;

2.1.3

Without the prior written consent of Party A, they shall not at any time following the date hereof, sell, transfer, mortgage or dispose
of in any manner any material assets of Party C or legal or beneficial interest in the material business or revenues of Party C of more than RMB 200,000, or allow the encumbrance thereon of any security interest;

2.1.4

Without the prior written
consent of Party A, they shall not incur, inherit, guarantee or suffer the existence of any debt, except for payables incurred in the ordinary course of business other than through loans;

2.1.5

They shall always operate
all of Party Cs businesses in the ordinary course of business to maintain the asset value of Party C and refrain from any action/omission that may affect Party Cs operating status and asset value;

2.1.6

Without the prior written
consent of Party A, they shall not cause Party C to execute any major contract, except the contracts in the ordinary course of business (for purpose of this subsection, a contract with a price exceeding RMB50,000 shall be deemed a major contract);

2.1.7

Without the prior
written consent of Party A, they shall not cause Party C to provide any person with any loan or credit;

2.1.8

They shall provide Party A with information on Party Cs business operations and financial condition at Party As request;

2.1.9

If requested by Party A,
they shall procure and maintain insurance in respect of Party Cs assets and business from an insurance carrier acceptable to Party A, at an amount and type of coverage typical for companies that operate similar businesses;



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2.1.10

Without the prior written consent of Party A, they shall not cause or permit Party C to merge, consolidate with, acquire or invest in any
person;

2.1.11

They shall
immediately notify Party A of the occurrence or possible occurrence of any litigation, arbitration or administrative proceedings relating to Party Cs assets, business or revenue;

2.1.12

To maintain the
ownership by Party C of all of its assets, they shall execute all necessary or appropriate documents, take all necessary or appropriate actions, file all necessary or appropriate complaints, and raise necessary or appropriate defenses against all
claims;

2.1.13

Without the
prior written consent of Party A, they shall ensure that Party C shall not in any manner distribute dividends to its shareholders, provided that upon Party As written request, Party C shall immediately distribute all distributable profits to
its shareholders;

2.1.14

At the request of Party A, they shall appoint any person designated by Party A as the director or executive director of Party C;

2.1.15

Without Party As
prior written consent, Party C shall not engage in any business in competition with Party A or its affiliates; and

2.1.16

Unless otherwise required by PRC law, Party C shall not be dissolved or liquidate without prior written consent by Party A.

2.2

Covenants of Party B

Party B hereby covenants as follows:

2.2.1

Without the prior written
consent of Party A, Party B shall not sell, transfer, mortgage or dispose of in any other manner any legal or beneficial interest in the equity interests in Party C held by Party B, or allow the encumbrance thereon, except for the interest placed in
accordance with Equity Interest Pledge Agreement entered into by and among the Party A and Party B on April20, 2015(the Equity InterestPledgeAgreement) and Power of Attorney
provided by Party B to Party A on April 20, 2015 (the Power of Attorney);



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2.2.2

Without the prior written consent of Party A, Party B shall cause the shareholders meeting and/or the directors (or the executive
director) of Party C not to approve any sale, transfer, mortgage or disposition in any other manner of any legal or beneficial interest in the equity interests in Party C held by Party B, or allow the encumbrance thereon of any security interest,
except for the interest placed in accordance with Equity Interest Pledge Agreement and Power of Attorney;

2.2.3

Without the prior written consent of Party A, Party B shall cause the shareholders meeting or the directors (or the executive director)
of Party C not to approve the merger or consolidation with any person, or the acquisition of or investment in any person;

2.2.4

Party B shall immediately notify Party A of the occurrence or possible occurrence of any litigation, arbitration or administrative proceedings
relating to the equity interests in Party C held by Party B;

2.2.5

Party B shall cause the shareholders meeting or the directors (or the executive director) of Party C to vote their approval of the
transfer of the Optioned Interests as set forth in this Agreement and to take any and all other actions that may be requested by Party A;

2.2.6

To the extent necessary
to maintain Party Bs ownership in Party C, Party B shall execute all necessary or appropriate documents, take all necessary or appropriate actions, file all necessary or appropriate complaints, and raise necessary or appropriate defenses
against all claims;

2.2.7

Party B shall appoint any designee of Party A as the director or the executive director of Party C, at the request of Party A;

2.2.8

Party B hereby waives its
right of first of refusal to transfer of equity interest by any other shareholder of Party C to Party A (if any), and gives consent to execution by each other shareholder of Party C with Party A and Party C the exclusive option agreement, the equity
interest pledge agreement and the power of attorney similar to this Agreement, Party Bs Equity Interest Pledge Agreement and Party Bs Power of Attorney and undertakes not to take any action in conflict with such documents executed by the
other shareholders;



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2.2.9

Party B shall promptly donate any profit, interest, dividend or proceeds of liquidation to Party A or any other person designated by Party A
to the extent permitted under applicable PRC laws; and

2.2.10

Party B shall strictly abide by the provisions of this Agreement and other contracts jointly or separately executed by and among Party B,
Party C and Party A, perform the obligations hereunder and thereunder, and refrain from any action/omission that may affect the effectiveness and enforceability thereof. To the extent that Party B has any remaining rights with respect to the equity
interests subject to this Agreement hereunder or under the Party Bs Equity Interest Pledge Agreement or under the Party Bs Power of Attorney, Party B shall not exercise such rights except in accordance with the written instructions of
Party A.

3.

Representations
and Warranties

Party B and Party C hereby represent and warrant to Party A, jointly and severally, as of the date of this
Agreement and each date of transfer of the Optioned Interests, that:

3.1

They have the power, capacity and authority to execute and deliver this Agreement and any equity interest transfer contracts to which they are
parties concerning the Optioned Interests to be transferred thereunder (each, a Transfer Contract), and to perform their obligations under this Agreement and any Transfer Contracts. Party B and Party C agree to enter into Transfer
Contracts consistent with the terms of this Agreement upon Party As exercise of the Equity Interest Purchase Option. This Agreement and the Transfer Contracts to which they are parties constitute or will constitute their legal, valid and
binding obligations and shall be enforceable against them in accordance with the provisions thereof;

3.2

Party B and Party C have obtained any and all approvals and consents from government authorities and third parties (if required) for execution,
delivery and performance of this Agreement.

3.3

The execution and delivery of this Agreement or any Transfer Contracts and the obligations under this Agreement or any Transfer Contracts shall
not: (i) cause any violation of any applicable laws of China; (ii) be inconsistent with the articles of association, bylaws or other organizational documents of Party C; (iii) cause the violation of any contracts or instruments to which they are a
party or which are binding on them, or constitute any breach under any contracts or instruments to which they are a party or which are binding on them; (iv) cause any violation of any condition for the grant and/or continued effectiveness of any
licenses or permits issued to either of them; or (v) cause the suspension or revocation of or imposition of additional conditions to any licenses or permits issued to either of them;



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3.4

Party B has a good and merchantable title to the equity interests held by Party B in Party C. Except for Equity Interest Pledge Agreement
and Power of Attorney, Party B has not placed any security interest on such equity interests;

3.5

Party C is a limited liability company duly organized and validly existing under the laws of the PRC. Party C has a good and merchantable title
to all of its assets, and has not placed any security interest on the aforementioned assets;

3.6

Party C does not have any outstanding debts, except for (i) debt incurred in the ordinary course of business; and (ii) debts disclosed to Party
A for which Party As written consent has been obtained.

3.7

Party C has complied with all laws and regulations of China applicable to asset acquisitions; and

3.8

There are no pending or
threatened litigation, arbitration or administrative proceedings relating to the equity interests in Party C, assets of Party C or Party C.

4.

Effective Date and Term

This Agreement shall become effective upon execution by the Parties, and remain effective until all equity interests held by Party B in Party C
have been transferred or assigned to Party A and/or any other person designated by Party A in accordance with this Agreement.

5.

Governing Law and Resolution of Disputes

5.1

Governing law

The execution, effectiveness, construction, performance, amendment and termination of this Agreement and the resolution of disputes hereunder
shall be governed by the laws of PRC.



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5.2

Methods of Resolution of Disputes

In the event of any dispute with respect to the construction and performance of this Agreement, the Parties shall first resolve the dispute
through friendly negotiations. In the event the Parties fail to reach an agreement on the dispute within 30 days after either Partys request to the other Parties for resolution of the dispute through negotiations, either Party may submit
the relevant dispute to the China International Economic and Trade Arbitration Commission for arbitration, in accordance with its arbitration rules. The arbitration shall be conducted in Beijing. The arbitration award shall be final and
binding on all Parties.

6.

Taxes and Fees

Unless as otherwise agreed in this Agreement, each Party shall pay any and all transfer and registration tax, expenses and fees incurred
thereby or levied thereon in accordance with the laws of China in connection with the preparation and execution of this Agreement and the Transfer Contracts, as well as the consummation of the transactions contemplated under this Agreement and the
Transfer Contracts.

7.

Notices

7.1

All notices and other communications required or permitted to be given pursuant to this Agreement shall be delivered personally or sent by
registered mail, postage prepaid, by a commercial courier service or by facsimile transmission to the address of such Party set forth below. A confirmation copy of each notice shall also be sent by email. The dates on which notices shall
be deemed to have been effectively given shall be determined as follows:

7.1.1

Notices given by personal delivery, by courier service or by registered mail, postage prepaid, shall be deemed effectively given on the date
of receipt or refusal at the address specified for notices;

7.1.2

Notices given by facsimile transmission shall be deemed effectively given on the date of successful transmission (as evidenced by an
automatically generated confirmation of transmission).



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7.2

For the purpose of notices, the addresses of the Parties are as follows:



|         |  |                                                                                                           
|-------- |  | ----------------------------------------------------------------------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd.                                                                   
|Address: |  | Room 651, Floor 6, New Century Hotel Office, No.6, Capital
Gymnasium South Road, Haidian District, Beijing
|Attn:    |  | Bin Li                                                                                                    
|Phone:   |  | +8610 6849 2345                                                                                           
|         | 
|Party B: |  | Beijing Jiasheng Investment Management Co., Ltd.                                                          
|Address: |  | 10th Floor, Building A, North Star Century Center, 8 Beichen
West Street, Chaoyang District, Beijing      
|Attn:    |  | Legal Department                                                                                          
|Email:   |  |                                                                                                           
|         | 
|Party C: |  | Beijing Yixin Information Technology Co., Ltd.                                                            
|Address: |  | Room 651, Floor 6, New Century Hotel Office, No.6, Capital
Gymnasium South Road, Haidian District, Beijing
|Attn:    |  | Bin Li                                                                                                    
|Phone:   |  | +8610 6849 2345                                                                                           

7.3

Any Party may at any time change its address for notices by a notice delivered to the other Parties in accordance with the terms hereof.

8.

Confidentiality

The Parties acknowledge that the existence and the terms of this Agreement, and any oral or written information exchanged between the Parties
in connection with the preparation and performance this Agreement are regarded as confidential information. Each Party shall maintain confidentiality of all such confidential information, and without obtaining the written consent of other
Parties, it shall not disclose any relevant confidential information to any third parties, except for the information that: (a) is or will be in the public domain (other than through the receiving Partys unauthorized disclosure); (b) is under
the obligation to be disclosed pursuant to the applicable laws or regulations, rules of any stock exchange, or orders of the court or other government authorities; or (c) is required to be disclosed by any Party to its shareholders, directors,
employees, legal counsels or financial advisors regarding the transaction contemplated hereunder, provided that such shareholders, directors, employees, legal counsels or financial advisors shall be bound by the confidentiality obligations similar
to those set forth in this Section. Disclosure of any confidential information by the shareholders, director, employees of or agencies engaged by any Party shall be deemed disclosure of such confidential information by such Party and such Party
shall be held liable for breach of this Agreement.

9.

Further Warranties

The Parties agree to promptly execute documents that are reasonably required for or are conducive to the implementation of the provisions and
purposes of this Agreement and take further actions that are reasonably required for or are conducive to the implementation of the provisions and purposes of this Agreement.



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10.

Breach of Agreement

10.1

If Party B or Party C
conducts any material breach of any term of this Agreement, Party A shall have right to terminate this Agreement and/or require the Party B or Party C to compensate all damages; this Section 10 shall not prejudice any other rights of Party A herein;

10.2

Party B or Party C
shall not have any right to terminate this Agreement in any event unless otherwise required by applicable laws.

11.

Miscellaneous

11.1

Amendment, change and supplement

Any amendment, change and supplement to this Agreement shall require the execution of a written agreement by all of the Parties.

11.2

Entire agreement

Except for the amendments, supplements or changes in writing executed after the execution of this Agreement, this Agreement shall
constitute the entire agreement reached by and among the Parties hereto with respect to the subject matter hereof, and shall supercede all prior oral and written consultations, representations and contracts reached with respect to the subject matter
of this Agreement.

11.3

Headings

The headings of
this Agreement are for convenience only, and shall not be used to interpret, explain or otherwise affect the meanings of the provisions of this Agreement.

11.4

Language

This Agreement is written in both Chinese and English language in three copies, each Party having one copy. In case there is any conflict
between the Chinese version and the English version, the Chinese version shall prevail.



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11.5

Severability

In the event
that one or several of the provisions of this Agreement are found to be invalid, illegal or unenforceable in any aspect in accordance with any laws or regulations, the validity, legality or enforceability of the remaining provisions of this
Agreement shall not be affected or compromised in any respect. The Parties shall strive in good faith to replace such invalid, illegal or unenforceable provisions with effective provisions that accomplish to the greatest extent permitted by law
and the intentions of the Parties, and the economic effect of such effective provisions shall be as close as possible to the economic effect of those invalid, illegal or unenforceable provisions.

11.6

Successors

This Agreement shall be binding on and shall inure to the interest of the respective successors of the Parties and the permitted assigns of
such Parties.

11.7

Survival

11.7.1

Any obligations that
occur or that are due as a result of this Agreement upon the expiration or early termination of this Agreement shall survive the expiration or early termination thereof.

11.7.2

The provisions of
Sections 5, 8, 10 and this Section 11.7 shall survive the termination of this Agreement.

11.8

Waivers

Any Party may
waive the terms and conditions of this Agreement, provided that such a waiver must be provided in writing and shall require the signatures of the Parties. No waiver by any Party in certain circumstances with respect to a breach by other Parties
shall operate as a waiver by such a Party with respect to any similar breach in other circumstances.



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IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                               
|-------- |  | ----------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd. (seal)

|       |  |                     
|------ |  | --------------------
|       | 
|By:    |  | /s/ Bin Li          
|Name:  |  | Bin Li              
|Title: |  | Legal Representative



Signature Page to
Exclusive Option Agreement



---

IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                                        
|-------- |  | -------------------------------------------------------
|Party B: |  | Beijing Jiasheng Investment Management Co., Ltd. (seal)

|       |  |                     
|------ |  | --------------------
|       | 
|By:    |  | /s/ Qiangdong LIU   
|Name:  |  | Qiangdong LIU       
|Title: |  | Legal Representative



Signature Page to
Exclusive Option Agreement



---

IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                                      
|-------- |  | -----------------------------------------------------
|Party C: |  | Beijing Yixin Information Technology Co., Ltd. (Seal)

|       |  |                     
|------ |  | --------------------
|       | 
|By:    |  | /s/ Bin Li          
|Name:  |  | Bin LI              
|Title: |  | Legal Representative



Signature Page to
Exclusive Option Agreement



---

Exclusive Option Agreement

This Exclusive Option Agreement (this Agreement) is executed by and among the following Parties as of April 20, 2015 in
Beijing, the Peoples Republic of China (China or the PRC):



|         |  |                                                                                                                                                                                                                                                                      
|-------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd., a wholly foreign owned enterprise, organized and existing under the laws of the PRC, with its address at Room C2-215, Building 4, No. 218, Yesheng Road, China (Shanghai) Pilot Free
Trade Zone;                            
|         | 
|Party B: |  | Shenzhen Tencent Industry Investment Fund Co., Ltd., a limited liability company organized and existing under the laws of the PRC, with its address at B815, Wuhan University Shenzhen Chanxueyan Building, No.6 Yuexing Second
Road, Nanshan District, Shenzhen; and
|         | 
|Party C: |  | Beijing Yixin Information Technology Co., Ltd., a limited liability company organized and existing under the laws of the PRC, with its address at Room 754 and 755, Floor 7, Building 3, No.6, Capital Gymnasium South Road,
Haidian District, Beijing.              

In this Agreement, each of Party A, Party B and Party C shall be referred to as a Party
respectively, and they shall be collectively referred to as the Parties.

Whereas:

Party B is a shareholder of Party C and as of the date hereof holds 26.6% of equity interests of Party C, representing RMB 13,300,000 in the
registered capital of Party C.

Now therefore, upon mutual discussion and negotiation, the Parties have reached the following agreement:

1.

Sale and Purchase of
Equity Interest

1.1

Option Granted

In
consideration of the payment of RMB10 by Party A, the receipt and adequacy of which is hereby acknowledged by Party B, Party B hereby irrevocably grants Party A an irrevocable and exclusive right to purchase, or designate one or more persons (each,
a Designee) to purchase the equity interests in Party C then held by Party B once or at multiple times at any time in part or in whole at Party As sole and absolute discretion to the extent permitted by Chinese laws and at the
price described in Section 1.3 herein (such right being the Equity Interest Purchase Option). Except for Party A and the Designee(s), no other person shall be entitled to the Equity Interest Purchase Option or other rights with
respect to the equity interests of Party B. Party C hereby agrees to the grant by Party B of the Equity Interest Purchase Option to Party A. The term person as used herein shall refer to individuals, corporations, partnerships,
partners, enterprises, trusts or non-corporate organizations.



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1.2

Steps for Exercise of Equity Interest Purchase Option

Subject to the provisions of the laws and regulations of China, Party A may exercise the Equity Interest Purchase Option by issuing a written
notice to Party B (the Equity Interest Purchase Option Notice), specifying: (a) Party As or the Designees decision to exercise the Equity Interest Purchase Option; (b) the portion of equity interests to be purchased by Party
A or the Designee from Party B (the Optioned Interests); and (c) the date for purchasing the Optioned Interests or the date for transfer of the Optioned Interests.

1.3

Equity Interest Purchase
Price

The purchase price of the Optioned Interests shall be RMB 13,300,000. If appraisal is required by the laws of China at the
time when Party A exercises the Equity Interest Purchase Option, the Parties shall negotiate in good faith and based on the appraisal result make necessary adjustment to the Equity Interest Purchase Price so that it complies with any and all then
applicable laws of China (collectively, the Equity Interest Purchase Price). Party B shall donate the balance of the Equity Interest Purchase Price received from Party A, after deducting/ withholding the relevant taxes (if any) pursuant
to applicable laws of China, to Party A or the Designee(s) of Party A for free within ten(10) days after Party B receives the Equity Interest Purchase Price and pays/ withholds the relevant taxes (if any).

1.4

Transfer of Optioned
Interests

For each exercise of the Equity Interest Purchase Option:

1.4.1

Party B shall cause Party
C to promptly convene a shareholders meeting, at which a resolution shall be adopted approving Party Bs transfer of the Optioned Interests to Party A and/or the Designee(s);

1.4.2

Party B shall obtain
written statements from the other shareholders of Party C giving consent to the transfer of the equity interest to Party A and/or the Designee(s) and waiving any right of first refusal related thereto;



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1.4.3

Within thirty (30) days after receipt of the Equity Interest Purchase Option Notice by Party B from Party A and/or any Designee (whichever is
applicable), Party B and Party A and/or such Designee (whichever is applicable) shall complete all procedures for Party As and/or such Designees (whichever is applicable) acquisition of such Optioned Interests and for Party A and/or such
Designee (whichever is applicable) becoming a shareholder of Party C, including without limitation execution of an equity interest transfer contract and any other necessary documents or agreements, adoption of any necessary resolutions, issuance of
any necessary documents by Party C and performance of all relevant procedures;

1.4.4

The relevant Parties shall execute all other necessary contracts, agreements or documents, obtain all necessary government licenses and
permits and take all necessary actions to transfer valid ownership of the Optioned Interests to Party A and/or the Designee(s), unencumbered by any security interests, and cause Party A and/or the Designee(s) to become the registered owner(s) of the
Optioned Interests. For the purpose of this Section and this Agreement, security interests shall include securities, mortgages, third partys rights or interests, any stock options, acquisition right, right of first refusal,
right to offset, ownership retention or other security arrangements, but shall be deemed to exclude any security interest created by this Agreement, Party Bs Equity Interest Pledge Agreement and Party Bs Power of
Attorney. Party Bs Equity Interest Pledge Agreement as used in this Agreement shall refer to the Interest Pledge Agreement executed by and among Party A, Party B and Party C on the date hereof and any modification, amendment
and restatement thereto. Party Bs Power of Attorney as used in this Agreement shall refer to the Power of Attorney executed by Party B on the date hereof granting Party A with power of attorney and any modification, amendment and
restatement thereto.

2.

Covenants

2.1

Covenants regarding Party C

Party B (as a shareholder of Party C) and Party C hereby covenant as follows:

2.1.1

Without the prior written
consent of Party A, they shall not in any manner supplement, change or amend the articles of association of Party C, increase or decrease its registered capital, or change its structure of registered capital in other manners;



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2.1.2

They shall maintain Party Cs corporate existence in accordance with good financial and business standards and practices, obtain and
maintain all necessary government licenses and permits by prudently and effectively operating its business and handling its affairs;

2.1.3

Without the prior written consent of Party A, they shall not at any time following the date hereof, sell, transfer, mortgage or dispose
of in any manner any material assets of Party C or legal or beneficial interest in the material business or revenues of Party C of more than RMB 200,000, or allow the encumbrance thereon of any security interest;

2.1.4

Without the prior written
consent of Party A, they shall not incur, inherit, guarantee or suffer the existence of any debt, except for payables incurred in the ordinary course of business other than through loans;

2.1.5

They shall always operate
all of Party Cs businesses in the ordinary course of business to maintain the asset value of Party C and refrain from any action/omission that may affect Party Cs operating status and asset value;

2.1.6

Without the prior written
consent of Party A, they shall not cause Party C to execute any major contract, except the contracts in the ordinary course of business (for purpose of this subsection, a contract with a price exceeding RMB50,000 shall be deemed a major contract);

2.1.7

Without the prior
written consent of Party A, they shall not cause Party C to provide any person with any loan or credit;

2.1.8

They shall provide Party A with information on Party Cs business operations and financial condition at Party As request;

2.1.9

If requested by Party A,
they shall procure and maintain insurance in respect of Party Cs assets and business from an insurance carrier acceptable to Party A, at an amount and type of coverage typical for companies that operate similar businesses;



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2.1.10

Without the prior written consent of Party A, they shall not cause or permit Party C to merge, consolidate with, acquire or invest in any
person;

2.1.11

They shall
immediately notify Party A of the occurrence or possible occurrence of any litigation, arbitration or administrative proceedings relating to Party Cs assets, business or revenue;

2.1.12

To maintain the
ownership by Party C of all of its assets, they shall execute all necessary or appropriate documents, take all necessary or appropriate actions, file all necessary or appropriate complaints, and raise necessary or appropriate defenses against all
claims;

2.1.13

Without the
prior written consent of Party A, they shall ensure that Party C shall not in any manner distribute dividends to its shareholders, provided that upon Party As written request, Party C shall immediately distribute all distributable profits to
its shareholders;

2.1.14

At the request of Party A, they shall appoint any person designated by Party A as the director or executive director of Party C;

2.1.15

Without Party As
prior written consent, Party C shall not engage in any business in competition with Party A or its affiliates; and

2.1.16

Unless otherwise required by PRC law, Party C shall not be dissolved or liquated without prior written consent by Party A.

2.2

Covenants of Party B

Party B hereby covenants as follows:

2.2.1

Without the prior written
consent of Party A, Party B shall not sell, transfer, mortgage or dispose of in any other manner any legal or beneficial interest in the equity interests in Party C held by Party B, or allow the encumbrance thereon, except for the interest placed in
accordance with Equity Interest Pledge Agreement entered into by and among the Party A and Party B on April20, 2015(the Equity InterestPledgeAgreement) and Power of Attorney
provided by Party B to Party A on April 20, 2015 (the Power of Attorney);



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2.2.2

Without the prior written consent of Party A, Party B shall cause the shareholders meeting and/or the directors (or the executive
director) of Party C not to approve any sale, transfer, mortgage or disposition in any other manner of any legal or beneficial interest in the equity interests in Party C held by Party B, or allow the encumbrance thereon of any security interest,
except for the interest placed in accordance with Equity Interest Pledge Agreement and Power of Attorney;

2.2.3

Without the prior written consent of Party A, Party B shall cause the shareholders meeting or the directors (or the executive director)
of Party C not to approve the merger or consolidation with any person, or the acquisition of or investment in any person;

2.2.4

Party B shall immediately notify Party A of the occurrence or possible occurrence of any litigation, arbitration or administrative proceedings
relating to the equity interests in Party C held by Party B;

2.2.5

Party B shall cause the shareholders meeting or the directors (or the executive director) of Party C to vote their approval of the
transfer of the Optioned Interests as set forth in this Agreement and to take any and all other actions that may be requested by Party A;

2.2.6

To the extent necessary
to maintain Party Bs ownership in Party C, Party B shall execute all necessary or appropriate documents, take all necessary or appropriate actions, file all necessary or appropriate complaints, and raise necessary or appropriate defenses
against all claims;

2.2.7

Party B shall appoint any designee of Party A as the director or the executive director of Party C, at the request of Party A;

2.2.8

Party B hereby waives its
right of first of refusal to transfer of equity interest by any other shareholder of Party C to Party A (if any), and gives consent to execution by each other shareholder of Party C with Party A and Party C the exclusive option agreement, the equity
interest pledge agreement and the power of attorney similar to this Agreement, Party Bs Equity Interest Pledge Agreement and Party Bs Power of Attorney and undertakes not to take any action in conflict with such documents executed by the
other shareholders;



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2.2.9

Party B shall promptly donate any profit, interest, dividend or proceeds of liquidation to Party A or any other person designated by Party A
to the extent permitted under applicable PRC laws; and

2.2.10

Party B shall strictly abide by the provisions of this Agreement and other contracts jointly or separately executed by and among Party B,
Party C and Party A, perform the obligations hereunder and thereunder, and refrain from any action/omission that may affect the effectiveness and enforceability thereof. To the extent that Party B has any remaining rights with respect to the equity
interests subject to this Agreement hereunder or under the Party Bs Equity Interest Pledge Agreement or under the Party Bs Power of Attorney, Party B shall not exercise such rights except in accordance with the written instructions of
Party A.

3.

Representations
and Warranties

Party B and Party C hereby represent and warrant to Party A, jointly and severally, as of the date of this
Agreement and each date of transfer of the Optioned Interests, that:

3.1

They have the power, capacity and authority to execute and deliver this Agreement and any equity interest transfer contracts to which they are
parties concerning the Optioned Interests to be transferred thereunder (each, a Transfer Contract), and to perform their obligations under this Agreement and any Transfer Contracts. Party B and Party C agree to enter into Transfer
Contracts consistent with the terms of this Agreement upon Party As exercise of the Equity Interest Purchase Option. This Agreement and the Transfer Contracts to which they are parties constitute or will constitute their legal, valid and
binding obligations and shall be enforceable against them in accordance with the provisions thereof;

3.2

Party B and Party C have obtained any and all approvals and consents from government authorities and third parties (if required) for execution,
delivery and performance of this Agreement.

3.3

The execution and delivery of this Agreement or any Transfer Contracts and the obligations under this Agreement or any Transfer Contracts shall
not: (i) cause any violation of any applicable laws of China; (ii) be inconsistent with the articles of association, bylaws or other organizational documents of Party C; (iii) cause the violation of any contracts or instruments to which they are a
party or which are binding on them, or constitute any breach under any contracts or instruments to which they are a party or which are binding on them; (iv) cause any violation of any condition for the grant and/or continued effectiveness of any
licenses or permits issued to either of them; or (v) cause the suspension or revocation of or imposition of additional conditions to any licenses or permits issued to either of them;



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3.4

Party B has a good and merchantable title to the equity interests held by Party B in Party C. Except for Equity Interest Pledge Agreement
and Power of Attorney, Party B has not placed any security interest on such equity interests;

3.5

Party C is a limited liability company duly organized and validly existing under the laws of the PRC. Party C has a good and merchantable title
to all of its assets, and has not placed any security interest on the aforementioned assets;

3.6

Party C does not have any outstanding debts, except for (i) debt incurred in the ordinary course of business; and (ii) debts disclosed to Party
A for which Party As written consent has been obtained.

3.7

Party C has complied with all laws and regulations of China applicable to asset acquisitions; and

3.8

There are no pending or
threatened litigation, arbitration or administrative proceedings relating to the equity interests in Party C, assets of Party C or Party C.

4.

Effective Date and Term

This Agreement shall become effective upon execution by the Parties, and remain effective until all equity interests held by Party B in Party C
have been transferred or assigned to Party A and/or any other person designated by Party A in accordance with this Agreement.

5.

Governing Law and Resolution of Disputes

5.1

Governing law

The execution, effectiveness, construction, performance, amendment and termination of this Agreement and the resolution of disputes hereunder
shall be governed by the laws of PRC.



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5.2

Methods of Resolution of Disputes

In the event of any dispute with respect to the construction and performance of this Agreement, the Parties shall first resolve the dispute
through friendly negotiations. In the event the Parties fail to reach an agreement on the dispute within 30 days after either Partys request to the other Parties for resolution of the dispute through negotiations, either Party may submit
the relevant dispute to the China International Economic and Trade Arbitration Commission for arbitration, in accordance with its arbitration rules. The arbitration shall be conducted in Beijing. The arbitration award shall be final and
binding on all Parties.

6.

Taxes and Fees

Unless as otherwise agreed in this Agreement, each Party shall pay any and all transfer and registration tax, expenses and fees incurred
thereby or levied thereon in accordance with the laws of China in connection with the preparation and execution of this Agreement and the Transfer Contracts, as well as the consummation of the transactions contemplated under this Agreement and the
Transfer Contracts.

7.

Notices

7.1

All notices and other communications required or permitted to be given pursuant to this Agreement shall be delivered personally or sent by
registered mail, postage prepaid, by a commercial courier service or by facsimile transmission to the address of such Party set forth below. A confirmation copy of each notice shall also be sent by email. The dates on which notices shall
be deemed to have been effectively given shall be determined as follows:

7.1.1

Notices given by personal delivery, by courier service or by registered mail, postage prepaid, shall be deemed effectively given on the date
of receipt or refusal at the address specified for notices;

7.1.2

Notices given by facsimile transmission shall be deemed effectively given on the date of successful transmission (as evidenced by an
automatically generated confirmation of transmission).



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7.2

For the purpose of notices, the addresses of the Parties are as follows:



|         |  |                                                                                                            
|-------- |  | -----------------------------------------------------------------------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd.                                                                    
|Address: |  | Room 651, Floor 6, New Century Hotel Office, No.6 , Capital Gymnasium South Road, Haidian District, Beijing
|Attn:    |  | Bin Li                                                                                                     
|Phone:   |  | +8610 6849 2345                                                                                            
|         | 
|Party B: |  | Shenzhen Tencent Industry Investment Fund Co., Ltd.                                                        
|Address: |  | Tencent Building, Kejizhongyi Avenue, Hi-tech Park, Nanshan District, Shenzhen                             
|Attn:    |  | Compliance and Transations Department                                                                      
|         | 
|Address: |  | Tencent Building, Kejizhongyi Avenue, Hi-tech Park, Nanshan District, Shenzhen                             
|Attn:    |  | Mergers and Acquisitions Department                                                                        
|         | 
|Party C: |  | Beijing Yixin Information Technology Co., Ltd.                                                             
|Address: |  | Room 651, Floor 6, New Century Hotel Office, No.6, Capital Gymnasium South Road, Haidian District, Beijing 
|Attn:    |  | Bin Li                                                                                                     
|Phone:   |  | +8610 6849 2345                                                                                            

7.3

Any Party may at any time change its address for notices by a notice delivered to the other Parties in accordance with the terms hereof.

8.

Confidentiality

The Parties acknowledge that the existence and the terms of this Agreement, and any oral or written information exchanged between the Parties
in connection with the preparation and performance this Agreement are regarded as confidential information. Each Party shall maintain confidentiality of all such confidential information, and without obtaining the written consent of other
Parties, it shall not disclose any relevant confidential information to any third parties, except for the information that: (a) is or will be in the public domain (other than through the receiving Partys unauthorized disclosure); (b) is under
the obligation to be disclosed pursuant to the applicable laws or regulations, rules of any stock exchange, or orders of the court or other government authorities; or (c) is required to be disclosed by any Party to its shareholders, directors,
employees, legal counsels or financial advisors regarding the transaction contemplated hereunder, provided that such shareholders, directors, employees, legal counsels or financial advisors shall be bound by the confidentiality obligations similar
to those set forth in this Section. Disclosure of any confidential information by the shareholders, director, employees of or agencies engaged by any Party shall be deemed disclosure of such confidential information by such Party and such Party
shall be held liable for breach of this Agreement.



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9.

Further Warranties

The Parties agree to promptly execute documents that are reasonably required for or are conducive to the implementation of the provisions and
purposes of this Agreement and take further actions that are reasonably required for or are conducive to the implementation of the provisions and purposes of this Agreement.



|10. | 
|--- | 

Breach of Agreement

10.1

If Party B or Party C
conducts any material breach of any term of this Agreement, Party A shall have right to terminate this Agreement and/or require the Party B or Party C to compensate all damages; this Section 10 shall not prejudice any other rights of Party A herein;

10.2

Party B or Party C
shall not have any right to terminate this Agreement in any event unless otherwise required by applicable laws.



|11. | 
|--- | 

Miscellaneous

11.1

Amendment, change and
supplement

Any amendment, change and supplement to this Agreement shall require the execution of a written agreement by all of the
Parties.

11.2

Entire
agreement

Except for the amendments, supplements or changes in writing executed after the execution of this Agreement, this Agreement
shall constitute the entire agreement reached by and among the Parties hereto with respect to the subject matter hereof, and shall supercede all prior oral and written consultations, representations and contracts reached with respect to the subject
matter of this Agreement.

11.3

Headings

The headings of
this Agreement are for convenience only, and shall not be used to interpret, explain or otherwise affect the meanings of the provisions of this Agreement.



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11.4

Language

This Agreement
is written in both Chinese and English language in three copies, each Party having one copy. In case there is any conflict between the Chinese version and the English version, the Chinese version shall prevail.

11.5

Severability

In the event that one or several of the provisions of this Agreement are found to be invalid, illegal or unenforceable in any aspect in
accordance with any laws or regulations, the validity, legality or enforceability of the remaining provisions of this Agreement shall not be affected or compromised in any respect. The Parties shall strive in good faith to replace such invalid,
illegal or unenforceable provisions with effective provisions that accomplish to the greatest extent permitted by law and the intentions of the Parties, and the economic effect of such effective provisions shall be as close as possible to the
economic effect of those invalid, illegal or unenforceable provisions.

11.6

Successors

This Agreement
shall be binding on and shall inure to the interest of the respective successors of the Parties and the permitted assigns of such Parties.

11.7

Survival

11.7.1

Any obligations that
occur or that are due as a result of this Agreement upon the expiration or early termination of this Agreement shall survive the expiration or early termination thereof.

11.7.2

The provisions of
Sections 5, 8, 10 and this Section 11.7 shall survive the termination of this Agreement.



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11.8

Waivers

Any Party may
waive the terms and conditions of this Agreement, provided that such a waiver must be provided in writing and shall require the signatures of the Parties. No waiver by any Party in certain circumstances with respect to a breach by other Parties
shall operate as a waiver by such a Party with respect to any similar breach in other circumstances.



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IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                               
|-------- |  | ----------------------------------------------
|Party A: |  | Shanghai Techuang Advertising Co., Ltd. (seal)
|         | 
|By:      |  | /s/ Bin Li                                    
|Name:    |  | Bin Li                                        
|Title:   |  | Legal Representative                          



Signature Page to
Exclusive Option Agreement



---

IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                                           
|-------- |  | ----------------------------------------------------------
|Party B: |  | Shenzhen Tencent Industry Investment Fund Co., Ltd. (seal)
|         | 
|By:      |  | /s/ Yuxin Ren                                             
|Name:    |  | Yuxin REN                                                 
|Title:   |  | Legal Representative                                      



Signature Page to
Exclusive Option Agreement



---

IN WITNESS WHEREOF, the Parties have caused their authorized representatives to execute this
Exclusive Option Agreement as of the date first above written.



|         |  |                                                      
|-------- |  | -----------------------------------------------------
|Party C: |  | Beijing Yixin Information Technology Co., Ltd. (Seal)
|         | 
|By:      |  | /s/ Bin Li                                           
|Name:    |  | Bin LI                                               
|Title:   |  | Legal Representative                                 



Signature Page to
Exclusive Option Agreement